Mr. Atsushi Wada Profile

Atsushi Wada

at Univ of Electro-Communications

SPIE Involvement:

Author

Publications (5)

Proceedings Article | 15 September 2006 Paper

Sub-pixel speckle displacement measurement by using optical vortex metrology

Tomoaki Yokozeki, Yoko Miyamoto, Atsushi Wada, Steen Hanson, Mitsuo Takeda, Wei Wang, Reika Ishijima

Proceedings Volume 6341, 634117 (2006) https://doi.org/10.1117/12.695358

KEYWORDS: Spiral phase plates, Signal analyzers, Speckle pattern, Speckle, Optical vortices, Metrology, Ferroelectric materials, Signal generators, Electronic filtering, Speckle metrology

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Proceedings Article | 6 October 2003 Paper

Effects of astigmatic aberration in holographic generation of Laguerre-Gaussian beam

Yoko Miyamoto, Mitsuo Takeda, Takumi Ohtani, Noboru Nishihara, Atsushi Wada

Proceedings Volume 5137, (2003) https://doi.org/10.1117/12.517961

KEYWORDS: Holograms, Beam propagation method, Beam analyzers, Holography, Beam splitters, Optical simulations, Numerical simulations, Wave propagation, Monochromatic aberrations, Radon

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Proceedings Article | 30 May 2003 Paper

Reconstruction of phase-shift digital holograms with unknown phase-shift by Fourier fringe analysis

Takeshi Kurashima, Atsushi Wada, Yoko Miyamoto, Mitsuo Takeda

Proceedings Volume 5144, (2003) https://doi.org/10.1117/12.508359

KEYWORDS: Holograms, Phase shifts, Digital holography, Fringe analysis, 3D image reconstruction, Fourier transforms, Diffraction, Reconstruction algorithms, Digital recording, Spatial frequencies

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Proceedings Article | 8 May 2001 Paper

Effects of astigmatic aberration in holographic generation of Laguerre-Gaussian beam

Atsushi Wada, Takumi Ohtani, Yoko Miyamoto, Mitsuo Takeda, Noboru Nishihara

Proceedings Volume 4416, (2001) https://doi.org/10.1117/12.427088

KEYWORDS: Holograms, Holography, Numerical simulations, Beam propagation method, Gaussian beams, Wave propagation, Phase shift keying, Phase modulation, Optical simulations, Far-field diffraction

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Proceedings Article | 7 May 1999 Paper

Electron-beam lithography fabrication of phase holograms to generate Laguerre-Gaussian beams

Yoko Miyamoto, Atsushi Wada, Mitsuo Takeda, Mitsutoshi Masuda

Proceedings Volume 3740, (1999) https://doi.org/10.1117/12.347806

KEYWORDS: Holograms, Lithography, Gaussian beams, Beam propagation method, Fabrication, Phase modulation, Polymers, Beam splitters, Integrated optics, Interferometry

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